xen
by Debian
CVEs (13)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2026-62436 | Med | 0.00 | 6.5 | 0.00 | Jul 28, 2026 | [This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] With the introduction of Grant Table v2 came the requirement to be able to switch between versions. Switching from v1 to v2 reduces the number of… | ||
| CVE-2026-62435 | Med | 0.00 | 6.5 | 0.00 | Jul 28, 2026 | [This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] With the introduction of Grant Table v2 came the requirement to be able to switch between versions. Switching from v1 to v2 reduces the number of… | ||
| CVE-2026-62434 | Med | 0.00 | 5.3 | 0.00 | Jul 28, 2026 | A guest started with Populated on Demand enabled (PoD) can attempt to reclaim pages which aren't regular guest RAM. This can cause corruption of memory management state in Xen. | ||
| CVE-2026-62433 | Hig | 0.00 | 7.3 | 0.00 | Jul 28, 2026 | Parts of the DM_OP handling code assumes the caller has provided the required number of buffers for the given operation without any checking being done. As a result, certain operations might access stack rubble as structures are possibly uninitialized. | ||
| CVE-2026-62432 | Hig | 0.00 | 7.3 | 0.00 | Jul 28, 2026 | The EVTCHNOP_expand_array hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOP_reset, resulting in dereferencing a NULL pointer. | ||
| CVE-2026-62431 | Hig | 0.00 | 7.5 | 0.00 | Jul 28, 2026 | The logic to handle periodic Viridian STIMERs performs a division with an unchecked user-controlled divisor value, that can be set to zero to cause a #DE fault. | ||
| CVE-2026-62430 | Hig | 0.00 | 7.5 | 0.00 | Jul 28, 2026 | Accesses to the CMOS memory contents are done using an indirect IO port pair. Therefore Xen needs to cache the guest chosen index, and one of the usages of the index didn't take the necessary locking to avoid concurrent changes. As a result, a guest could change the index… | ||
| CVE-2026-62429 | Med | 0.00 | 6.5 | 0.00 | Jul 28, 2026 | Accessing the vNUMA configuration data of a guest is still possible when domain destruction has already started. The cleaning up of that configuration information is not synchronized with its retrieval by a device model controlling the guest. | ||
| CVE-2026-62428 | Hig | 0.00 | 7.8 | 0.00 | Jul 28, 2026 | When grant-copy operations are processed, the respective grant may or may not already be in use by another operation (a mapping or another copy). For all copy operations the referenced guest frame is looked up. When another operation is already active for the grant (the grant… | ||
| CVE-2026-62427 | Hig | 0.00 | 8.8 | 0.00 | Jul 28, 2026 | [This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To manage the system, sysctl and platform operations are used by the control domain or a possible Xenstore domain. Some of these operations may not… | ||
| CVE-2026-62426 | Hig | 0.00 | 8.8 | 0.00 | Jul 28, 2026 | [This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To manage the system, sysctl and platform operations are used by the control domain or a possible Xenstore domain. Some of these operations may not… | ||
| CVE-2026-42493 | Hig | 0.00 | 7.5 | 0.00 | Jul 28, 2026 | Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly. Since alternatives (HVM/PVH: HAP, PV: shim) are commonly available, the decision was to deprecate the functionality,… | ||
| CVE-2026-42492 | Hig | 0.00 | 7.5 | 0.00 | Jul 28, 2026 | Xenstore, to have an up-to-date picture of the entire system, wants to know of domains appearing and disappearing. To make this more robust, a new XEN_DOMCTL_get_domain_state was introduced. The management of the bitmap underlying that operation is tied into the binding of the… |
- risk 0.00cvss 6.5epss 0.00
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] With the introduction of Grant Table v2 came the requirement to be able to switch between versions. Switching from v1 to v2 reduces the number of…
- risk 0.00cvss 6.5epss 0.00
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] With the introduction of Grant Table v2 came the requirement to be able to switch between versions. Switching from v1 to v2 reduces the number of…
- risk 0.00cvss 5.3epss 0.00
A guest started with Populated on Demand enabled (PoD) can attempt to reclaim pages which aren't regular guest RAM. This can cause corruption of memory management state in Xen.
- risk 0.00cvss 7.3epss 0.00
Parts of the DM_OP handling code assumes the caller has provided the required number of buffers for the given operation without any checking being done. As a result, certain operations might access stack rubble as structures are possibly uninitialized.
- risk 0.00cvss 7.3epss 0.00
The EVTCHNOP_expand_array hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOP_reset, resulting in dereferencing a NULL pointer.
- risk 0.00cvss 7.5epss 0.00
The logic to handle periodic Viridian STIMERs performs a division with an unchecked user-controlled divisor value, that can be set to zero to cause a #DE fault.
- risk 0.00cvss 7.5epss 0.00
Accesses to the CMOS memory contents are done using an indirect IO port pair. Therefore Xen needs to cache the guest chosen index, and one of the usages of the index didn't take the necessary locking to avoid concurrent changes. As a result, a guest could change the index…
- risk 0.00cvss 6.5epss 0.00
Accessing the vNUMA configuration data of a guest is still possible when domain destruction has already started. The cleaning up of that configuration information is not synchronized with its retrieval by a device model controlling the guest.
- risk 0.00cvss 7.8epss 0.00
When grant-copy operations are processed, the respective grant may or may not already be in use by another operation (a mapping or another copy). For all copy operations the referenced guest frame is looked up. When another operation is already active for the grant (the grant…
- risk 0.00cvss 8.8epss 0.00
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To manage the system, sysctl and platform operations are used by the control domain or a possible Xenstore domain. Some of these operations may not…
- risk 0.00cvss 8.8epss 0.00
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To manage the system, sysctl and platform operations are used by the control domain or a possible Xenstore domain. Some of these operations may not…
- risk 0.00cvss 7.5epss 0.00
Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly. Since alternatives (HVM/PVH: HAP, PV: shim) are commonly available, the decision was to deprecate the functionality,…
- risk 0.00cvss 7.5epss 0.00
Xenstore, to have an up-to-date picture of the entire system, wants to know of domains appearing and disappearing. To make this more robust, a new XEN_DOMCTL_get_domain_state was introduced. The management of the bitmap underlying that operation is tied into the binding of the…